Local Calling Guide

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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-605 4 Chicago Zone 01-Calumet IL CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2012-09-29   
312-605 5 Chicago Zone 01-Calumet IL CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2012-09-29   
312-605 6 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-10-02   
312-605 7 Chicago Zone 01-Calumet IL CHCGILCLEMD  7421 AT&T - LOCAL 358   2012-11-04   
312-605 8 Chicago Zone 01-Calumet IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2012-10-02   
312-605 9 Chicago Zone 01-Calumet IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2012-11-01   
312-606 A Chicago Zone 01-Franklin IL CHCGILFRDS0  9329 ILLINOIS BELL TEL CO 358      
312-607 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-608 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-609 A Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 0 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 1 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 2 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 3 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 4 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 5 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 6 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 7 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 8 Chicago Zone 01-Franklin IL CHCGILFRDS3  9329 ILLINOIS BELL TEL CO 358      
312-609 9 Chicago Zone 01-Franklin IL CHCGILMF4MD  5562 METROPCS, INC. 358   2011-01-05   
312-610 A Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358      
312-610 0 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2012-10-01   
312-610 1 Chicago Zone 01-Calumet IL   515J IP HORIZON LLC 358   2013-06-10   
312-610 2 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 3 Chicago Zone 01-Calumet IL CHCGILMF6MD  6529 T-MOBILE USA, INC. 358   2013-06-10   
312-610 4 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-10-02   
312-610 5 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-10-02   
312-610 6 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-10-02   
312-610 7 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-10-02   
312-610 8 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2012-10-02   
312-610 9 Chicago Zone 01-Calumet IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2012-11-18   
312-612 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-612 0 Chicago Zone 01-Canal IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-612 1 Chicago Zone 01-Canal IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-09-28   
312-612 2 Chicago Zone 01-Canal IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-09-28   
312-612 3 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-612 4 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-612 5 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-612 6 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2000-10-24   
312-612 7 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2000-10-24   
312-612 8 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358   2000-10-24   
312-612 9 Chicago Zone 01-Canal IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-613 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-614 A Chicago Zone 01-Calumet IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-614 0 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 1 Chicago Zone 01-Calumet IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2012-12-14   
312-614 2 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-12-08   
312-614 3 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 4 Chicago Zone 01-Calumet IL CHCGILCLDS7  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2012-11-23   
312-614 5 Chicago Zone 01-Calumet IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2012-12-08   

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Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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